Process water regulation
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Process Water Regulation. Time Frame. Opportunities To Comment. Today October 15 th - Urban Stakeholders Committee November 9 th – California Water Commission Formal Rulemaking – Public Comment Periods End of November (timing is tentative)– Emergency Rulemaking

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Process Water Regulation

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Process water regulation

Process Water Regulation

Time Frame

Opportunities to comment

Opportunities To Comment

  • Today

  • October 15th- Urban Stakeholders Committee

  • November 9th – California Water Commission

  • Formal Rulemaking – Public Comment Periods

    • End of November (timing is tentative)– Emergency Rulemaking

    • December 2010 – May 2011(timing is tentative)– Regular Rulemaking

  • CII Task Force

Process water regulation changes from 9 27 10 draft

Process Water RegulationChanges from 9-27-10 Draft

U 5 Work Group Meeting #5


Summary of changes

Summary of Changes

  • Housekeeping (OAL) formatting

  • Simplified

  • Add flexibility

  • Locally responsive

Changes not made

Changes Not Made

  • Thresholds of 5%, 10% and 20%

  • Avoided cost criterion

  • 25% of population is disadvantaged

  • Tiered approach

Section 596 0

Section 596.0


  • The Department of Water Resources will review and assess the implementation of sections 596.1 through 596.6. Based upon the recommendations of the Commercial, Industrial and Institutional task force convened pursuant…

Section 596 1 applicability

Section 596.1 Applicability

  • (1) It has a substantial percentage of industrial water use in its service area, or;

  • (2) The exclusion of process water from the calculation of gross water use avoids a disproportionate burden for water conservation on another customer sector.

  • This was changed from and to or to provide more flexibility, CUWA comments, and conform with statute

Section 596 2 definitions

Section 596.2 Definitions

  • Term “Commercial” simplified

  • Added:(b) “disadvantaged community” means a community with an annual median household income that is less than 80 percent of the statewide annual median household income. (Addressing comments received from NRDC)

  • Incidental water use def: or other water uses not related to the manufacturing of a product or research and development. (industry comment)

Section 596 2 definitions cont

Section 596.2 Definitions cont.

  • Industrial water def: Data centers dedicated to a manufacturing or research and development process is part of an industrial water user, while data centers that exist to provide a service as in commercial centers, are not. (industry comment)

  • (h) “institutional water user” means a water user dedicated to public service. This type of user includes, among other users, higher education institutions, schools, courts, churches, hospitals, government facilities, and nonprofit research institutions. (consistency with language of regulation)

  • Process water def: Water used in the manufacturing process that is necessary for complying with local, State and federal health and safety laws shall be considered process water

Section 596 2 definitions cont1

Section 596.2 Definitions cont.


  • (l) “recycled water” means water that is used… (consistent with others)


  • (m) “urban retail water supplier” means a water supplier… (consistent with others)

596 3 criteria for excluding industrial process water use from gross water use

§596.3. Criteria for Excluding Industrial Process Water Use from Gross Water Use

The values utilized below shall be consistent with those in the baseline daily per capita and water use target as reported in the suppliers urban water management plans. When calculating its gross water use, an urban retail water supplier may deduct up to 100 percent of process water use if any one of the following criteria is met in its service area:

  • (a) Total industrial water use is equal to or greater than 12 percent of gross water use, or

  • (b) Total industrial water use is equal to or greater than 15 gallons per capita per day, or

  • (c) Non-industrial water use is equal to or less than 120 gallons per capita per day if the water supplier has self-certified the sufficiency of its water conservation program with the Department of Water Resources under the provisions of section 10631.5 of the Water Code, or

  • (d) The population within the suppliers’ service area meets the criteria for a disadvantaged community.

596 4 quantification and verification of process and incidental water

§596.4. Quantification and Verification of Process and Incidental Water


  • (b) The volume of incidental water use shall be verified and separated out from process water use.

  • (1) To establish a baseline for determining incidental water use, urban retail water suppliers shall use a five-year period average.

  • (2) Verification can be accomplished by metering, sub-metering or other means determined suitable and verifiable by the urban retail water supplier such as audits, historic manufacturing output, or suppliers’ billing records.

  • (3) Verification is not required if the incidental water use is determined to be less than 5 percent of total industrial water use. (this criterion will change)

596 5 existing industrial customers and process water use

§596.5. Existing Industrial Customers and Process Water Use


  • (c) This section shall not limit an ordinance or resolution adopted pursuant to a declaration of drought emergency by an urban retail water supplier.

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